Gcina ibhetri ye-lithium ngokulibaziseka

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - អ្នកផ្គត់ផ្គង់ស្ថានីយ៍ថាមពលចល័ត

Eli nqaku lesicelo lichaza unikezelo lwamandla oluphambili kunye nebhetri egciniweyo nge-diode "okanye" isekethe yengqiqo kunye noqhagamshelo lomthwalo. Olu lwakhiwo lulula ukuyiqonda, kodwa xa i-voltage yebhetri idlula i-voltage engundoqo yokubonelela, i-diode "okanye" i-logic circuit circuit iya kudibanisa ibhetri, kwaye umbane oyintloko awukwazi ukukhethwa ngokufanelekileyo. Eli nqaku linika indlela yokusombulula le ngxaki.

MAX931 umthelekisi, umthelekisi eyakhelwe-ngaphakathi 2% isiseko. Amandla aphambili kunye neebhetri ezisecaleni eziqhagamshelwe ukulayisha nge-diode elula "okanye" isekethe yengqiqo. Nangona kunjalo, xa i-voltage yebhetri idlula i-voltage engundoqo yonikezelo lwamandla, i-diode "okanye" i-logic yesekethe inika amandla ibhetri, kwaye ayikwazi ukukhetha ngokufanelekileyo umbane oyintloko.

Umzobo 1 unikezwa indlela yokusombulula le ngxaki, uluhlu lwe-voltage ye-voltage engundoqo yokutshintshwa kwamandla yi-7V ukuya kwi-30V, ukunikezelwa kwamandla ombane yi-9V ibhetri. Umzobo 1.IC1MAX931 umthelekisi usetyenziselwa ukubeka esweni amandla ombane ombane.

Xa umbane ongundoqo wonikezelo wehla ngaphantsi kwe-7.4V, unokuphinda ubuyiselwe kwibhetri yogcino ngokumisa ibhetri engalunganga. I-MAX931 yi-ultra-low power comparator ene-1.

182V umsantsa band. Xa usebenza ngokufanelekileyo, umlinganiselo wokuthelekisa uphantsi, ii-FET ezintathu ezinxuseneyo ze-N-channel ziyacinywa, kwaye i-negative yebhetri ayinanto, ngowona mbane ungundoqo Ubonelelo lwamandla ombane. Xa umbane ongundoqo wonikezelo wehla ukuya kwi-7.

I-4V, iziphumo zomthelekisi kwinqanaba eliphezulu. Iza kuvula i-N-channel FET, icole ibhetri engasebenziyo, eqhutywa yibhetri (Figure 2). Umfanekiso wesi-2.

Umbane ongundoqo wobonelelo lwamandla (itshaneli yesi-3 kwiFig. I-1) iyancipha ngokuthe ngcembe, i-voltage yesango ye-N-channel FET iba phezulu (isiteshi 2). Oku kuya kuvula ibhetri ukuze i-voltage ephumayo (itshaneli 1) ifike kwi-9V.

Xa i-voltage enkulu yokubonelela ifikelela kwi-8.4V, i-N-channel FET icinyiwe, kwaye umbane oyintloko uphuma. I-D1, i-C1, kunye ne-R6 yesekethe yokuqhuba isango ibonakala ukulibaziseka okuthile, okuphelisa ukuphazamiseka kwexeshana ukuba isiphaluka sibonakala sisuka kwibhetri ukuya kumthombo wamandla oyintloko, kwaye ezi ziphazamiso zexeshana zinokubangela ukuba i-microcontroller yenkqubo isetyenziselwe ukusetha kwakhona, le ngongoma Enye malunga neenkqubo ezininzi azivumelekanga.

Umzobo 3 ubonisa iimpawu xa isiphaluka singekho ukuphazamiseka kwexeshana. Qaphela: I-R3 kunye ne-R4 ibeka i-voltage ye-hysteresis ye-MAX931 ukuya kwi-800mV ukuqinisekisa ukusebenza okuchanekileyo. Nceda ubhekisele kwixabiso elihambelanayo loxhaso lwedatha yedatha ye-MAX931.

Umfanekiso wesi-3. Xa unikezelo lwamandla lubuyiselwa ngokukhawuleza, impendulo yemveliso ayikho ekuphazamisekeni kwexesha elifutshane.